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Guru3D.com » News » AMD Ryzen 3 3300X Has a fully enabled CCX, unlike the Ryzen 3 3100

AMD Ryzen 3 3300X Has a fully enabled CCX, unlike the Ryzen 3 3100

by Hilbert Hagedoorn on: 04/24/2020 05:15 PM | source: hardwareluxx.de | 46 comment(s)
AMD Ryzen 3 3300X Has a fully enabled CCX, unlike the Ryzen 3 3100

This week AMD announced two entry-level quad-core processors, the Ryzen 3 3100 and 3300X. The difference between the two 4-core / 8-thread parts, however, is to be found in the way how the active processor cores are assigned. 

In a block diagram leaked by ViveK oneindia.co.in (as you can see watermarked in the screenshot), you can see that there are some subtle differences in-between the two new Ryzen 3 processors. First and foremost the CCX assignments are different. While each die used for Ryzen 3000  still is a physical the 8-core (ZEN2 processor die) part, it holds two 4-core clusters with each cluster of four processors cores called a CCX. 

 

 

The 3100 will get a 2+2 configuration (8MB+8MB L3) thus is grabbing two cores per CCX cluster, and that (should/could) make it slower than the 3300X for latency in relation to the full 16 MB L3 cache. The 3300X, on the other hand, has one full CCX activated, four cores e.g. 4+0, this processor will benefit from that, albeit a little. Earlier on a single thread CB15 score already leaked for the 3300X, which shows it's a potent quad-core processor. Time will tell, you can expect reviews next month. 



AMD Ryzen 3 3300X Has a fully enabled CCX, unlike the Ryzen 3 3100




« AMD Starts Rolling Out AGESA 1.0.0.5 BIOS Firmware · AMD Ryzen 3 3300X Has a fully enabled CCX, unlike the Ryzen 3 3100 · NVIDIA Announces GTC 2020 Keynote with Huang on May 14th »

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vbetts
Moderator



Posts: 15139
Joined: 2006-07-04

#5782521 Posted on: 04/25/2020 03:16 AM
^
(Almost) Completely false.

Idk which game are you talking about. Even csgo uses 8 threads, which engine is basically 20 yo

If you talk about League of legends, than EVEN THAT PIECE OF GARBAGE with its 10yo engine uses 4 threads AT LEAST!

Let's not even talk about overwatch, pubg, valorant which can easly use 16.

Indie games aren't single threaded neither lol,
One thing to really think about with games that may use up to 16 threads, do these games actually scale to these threads evenly? I'm willing to bet that even though a game might be able to scale across multiple threads, it doesn't scale across each thread evenly. I7 4c/8t are still holding up today for example.

Cyberdyne
Senior Member



Posts: 3582
Joined: 2010-01-16

#5782525 Posted on: 04/25/2020 04:19 AM
The way the article is written is really misleading. AMD is making these parts with remnants from failed chip printing operations. Sometimes there are four cores that are good in 1 ccx and those are going to be faster and they get the 3300 identifier. Sometimes AMD must stitch together two cores from 1ccx and two cores from another CCX (4 ways to do this vs only 2 ways to make a 3300 above). I say stitch because it's literally done with lasers to cut out the bad cores. These patchwork chips would have higher yield but they would be the slowest and named 3100.

I don't think that makes the article misleading. It's just information. If someone asks "why?", the answer is binning. If someone asks "what is binning?", then what you just said becomes important. Doesn't change the tone of this news article in any way.
One thing to really think about with games that may use up to 16 threads, do these games actually scale to these threads evenly? I'm willing to bet that even though a game might be able to scale across multiple threads, it doesn't scale across each thread evenly. I7 4c/8t are still holding up today for example.

That's an important differentiator to understand, yeah. "Able to" doesn't mean "benefits from".

HeavyHemi
Senior Member



Posts: 6954
Joined: 2008-10-27

#5782544 Posted on: 04/25/2020 07:28 AM
If one wanted to be extra pedantic, one could point out that the "IMO" was part of the second sentence recommending a certain kind of buying decision, and not the first sentence - which in fact presents something as "fact", and therefor can be scrutinized.
But we don't want to be extra pedantic, do we. :)
Well, because, it is a fact. It IS a factor. I did not characterize it other than that. The argument would be how much of a factor. The opinion part is what others should purchase... based on the facts. ;)

Astyanax
Senior Member



Posts: 13403
Joined: 2018-03-21

#5782552 Posted on: 04/25/2020 08:04 AM
Idk which game are you talking about. Even csgo uses 8 threads, which engine is basically 20 yo


threads do not equal cores.

D1stRU3T0R
Senior Member



Posts: 580
Joined: 2017-08-16

#5782561 Posted on: 04/25/2020 08:45 AM
threads do not equal cores.


That's exactly why I said threads. But afaik it can use 8 core too, not sure so that's why I wrote 8 threads.

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